Add the Umarex Colt M4 flip up front sight to the barrel of your Colt M4 .22 caliber rimfire rifle for greater accuracy. It is constructed from durable metal and has a matte black finish to prevent reflection. It flips down to accommodate other optic options.Specifications and Features:
Attaches to barrel
Only for use on Colt .22 Tactical Rimfire Flip Up Front Sight and Umarex rifles